Improvement in car brakes and starters



1 EDUAnDoBoNNnvAn, or BosToN, MASSACHUSETTS.

f IMPROVEMENT INCARBRAKES AND STARTER-s.

` Specification" forming part ofLettcrs Patent No.` 112,534, dated March14, 1871.'

Told/ZZ "rbh/071% it may concern.'

Be itknown thatiLfEDUAno BONNEVAL,

description jthereof," which will enable f others Skilled in the artto.. make and` use the same,- reference beinghad to the accompanyingdrawi n ingsyforming partioi` this specification, in fywhich-M` i FigureI is a vertical longitudinal section of "az horse-car, \to whichmyimprovement has beenfattached. vFigpZis a detail view of the `lorakeandstarter. fFifg; 3 is a bottom plan vewofathecar, showing the `brakeconnected with the chains `and sway-bars for operating y fthemintheordinarymanner.

Similar letters ofreferenceindicate corre" `spondingparts..` 'n VMyinvention has forits object to furnish i 3 an"improved brake forattachment tocars and `other vehicles, andwhichishallbe so constructedand" arranged `that it will stop and f y hold thevehicle when stoppedupon an up-` gradein zsuchaway "asto assist the `motive 1 `power instarting` andydiminishthe strain, y andit consists inthe constructionand combinationofthe various -parts :of the device, as

" l, hereinafter more .fullydescribed` `A.representsthe body orframeofacar.

i Baretheaxles. i

\ 11 G` are the wheelsfandDis the systemof levers andchains,"by meansofwhich'the bra-ke is usually applied. i 1Q n x i. i C fEarethesuspensionbraces ofthe brake, `uponthe npperends "ofhwhich are formedhooks, eyes,zlgloops,$orpotherfastenings, by means of whichfitmay besuspended from and pivoted totheaxleoriother convenient part of thevehiclefbodyq rIhe two "braces E of "each brake are connected toeachmotherand [held in theirproper positions by a plank, plate, .forrame, F, as shownin Figs. land 2; rlhe i. lower ends of thebraces E,which I prefer to 1 makebranched, are bent outward and are se-` curelyattached to ,thebrake-shoes G; The `shoes G are made `in theshape shownin Fig. n l-that is to fsay,`inithefshape of ageurved wedge-fthe iinner` or concave `surface, being made to fit upon thefrim of the wheelto which it is to be applied, and the outer or convex surface being madeupon a larger curve and eccentricto the inner "curve to give the shoewhich passes over a pulley, I, pivoted to the bottom ofthe body or frameA of the vehicle,

and which passes thence into such a position andis secured in such a waythat it may be `readily slaekened by the driver to allow theV brake todrop into the' position shown at` the n right in Fig.` 1, to hold andassistin starting the vehicle when stopped upon an upgrade, or drawntaut to raise the brake into its ordinary horizontal position, as shownat the left` in Fig. I.

n "Io the upper part or edge of the plate, n lplank, or frame F isattached one end of the Achain J, `the other end of which is connectedwith the system of levers by which the ordinary brake is operated, sothatwhen raised into a horizontal position it may be operated When thevehicle is as an ordinary brake. stopped upon an upgrade, the chainH isslackened, allowing the brakel to drop,the sharp end of the shoesentering into the space between the wheels and the track or ground.Then, as the vehicle settles back, the wheels and shoes will take theposition shown at the p right in Fig. l, blocking and raising the wheelsin s uch a waythat they will descend when the vehicle is started, 'andthus assist the motive power and diminish the strain in starting.

Havingthus described my invention, I claim as new and desire to secureby Letters ]atent` ;Q n

1 The brake shoes G, constructed in the form of a curved wedge,substantially as herein shown and described, to adapt them to i. thepurpose set forth.

.2. 'Ihe combinationlof the braces E, plank,

plate, or frame F, and shoes G with each other, substantially as herein`shown and described, and for the purpose set forth.

3. The combinaticnof the chains H and J, either or both, with the brakeE F G, substantially as herein shown and described, and for the purposesset forth. i F EDUARDO BONNEVAL.

Witnesses: f

Grills.l H. ALMY, J. M. AGUAYo.

